Reaction type sprinkler



Feb. 19, 1957 v. CHAVEZ REACTION TYPE SPRINKLER T 27206 2'CZlaveZmvENToR ATTORNEYS 2 Sheets-She et 2 am v m m a w o h m m 0 Z \\ln e c N\ m B V Feb. 19, 1957 v. CHAVEZ REACTION TYPE SPRINKLER FiledAug. 11, 1955 United States Patent REACTION TYPE SPRINKLER VincentChavez, Los Angeles, Calif.

Application August 11, 1955, Serial No. 527,831

1 Claim. (Cl. 299-69) This invention relates to a sprinkler for lawns orthe like.

An object of this invention is to provide an improved sprinkler of therotating type, wherein the rotation is produced by means of a jerking orpartial movement of the sprinkler nozzles.

Another object of this invention is to provide an improved sprinklerwherein the speed of rotation may be adjusted in accordance with thepressure and flow of Water from the nozzles.

A further object of this invention is to provide a sprinkler wherein thesprinkler head and operator are loosely assembled together without theaid of springs and the rotating action is produced when the jet of oneof the nozzles is in action.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention consists of certain novel details ofconstruction and combinations of parts, hereinafter more fully describedand pointed out in the claim, it being understood that changes may bemade in the construction and arrangement of parts without departing fromthe spirit of the invention as claimed.

Referring to the drawing:

Figure 1 is a detail side elevation of a sprinkler constructed accordingto an embodiment of this invention.

Fig. 2 is an end elevation of the sprinkler.

Fig. 3 is an end elevation of the sprinkler opposite to that shown inFig. 2.

Fig. 4 is a detail elevation of the impeller or operator for thesprinkler head.

Fig. 5 is a plan view of the device showing the impeller in operativeposition relative to the sprinkler head.

Fig. 6 is a plan view partly in section showing the impeller in initialstarting position.

Fig. 7 is a fragmental vertical section of the device.

Referring to the drawings, the numeral 10 designates generally asprinkler head which is formed of a lower pipe section 11 adapted to bethreaded onto a supply pipe 13. The pipe section 11 is formed with acentral bore and the stem 12 of the sprinkler head is loosely orrotatably disposed in the connection 11. The stem 12 is provided at itslower end with an annular flange or nut 14, whereby the stem 12 will beheld against undue upward movement relative to the fitting 11. The head10 includes a pair of upwardly and outwardly directed tubular arms 15and 16 connected to a crank 17 extending from the upper end of the stem12. The arm 15 has mounted in the upper outer end thereof a nozzle 18,and the arm 16 has mounted in the upper end thereof a nozzle 19. Thesenozzles 18 and 19 are of like construction and are adapted to produce astream of water which is relatively solid as it leaves the ends of thenozzles 18 and 19.

A vertically disposed shaft 20 is fixedly secured in the connecting wall21 between the arms 15 and 16 and the shaft 20 has mounted on the upperend thereof a nut 2,782,071 Patented Feb. 19, 1957 ice 22. A cup-shapedimpeller generally indicated at 23, is disposed outwardly from thenozzle 18 and the im peller 23 is formed of a vertical bar 24, upper andlower walls 25 and 26 respectively, and an outer arcuate connecting wall27. The inner surface of the impeller 26 where the outer wall 27 joinswith the vertical wall 24 is formed on a cancave, as indicated at 28.

The inner end of the wall 24 is provided with a cutout as indicated at29, so that the wall 24 may partly project over the outer end'of nozzle18. The impeller 23 is carried by an elongated lever arm 30 secured to acentral bushing 31 rotatably mounted on the vertical shaft 20. Theimpeller with arm 30 is balanced by means of an oppositely extending andupwardly curved balancing lever arm 32 extending from the bushing 31.The arm 32 is disposed in a position out of contact with a water streambeing ejected from nozzle 19. In order to provide a means wherebysprinkler head 10 will be progressively rotated about the fitting 11, Ihave provided a hammer or impact member 33, which is disposed at rightangles to a threaded bore 34 extending through lever arm 30.

Bolt 34 is adjusted relative to the arm 30 by threading the latterthrough arm 30 and locking the bolt 30 by means of a lock nut 35. Thebushing 31 is loosely disposed on vertical shaft 20 and may havevertical movement thereon simultaneously with rotary movement. Verticalmovement of fitting 11 produces vertical movement of impeller 23 whichis produced by means of cam roller 36 secured to shaft 20 by means of aset screw 37. The bushing 31 is provided at the lower end thereof withan annular collar 38 and a cam engaging pin 39 extends from the collar36 and rides on the inclined cam surface 40 of cam 36.

In the use and operation of this sprinkler the fitting 11 is secured toa supply pipe 13 with the fitting 11 in a vertical position. When wateris forced upwardly and outwardly from the nozzles 18 and 19, this waterwill be disposed adjacent the nozzles in a relatively solid stream. Thewater passing out of nozzle 18 will strike impeller member 23 andthereby cause impeller member 23 to partially rotate relative to nozzlehead 10. When impeller 23 moves upwardly as shown in Figs. 5 and 6,which in the actual operation of the device is counter-clockwise, thehammer or impact member 23 will strike nozzle 18 and the weight of theimpeller 23 with arm 30 and arm 32 will produce a jerking rotarymovement of impeller head 10 in a counter-clockwise direction. Animpeller 23 moves to the left away from the stream passing throughnozzle 18, impeller 23 with arm 30 and fitting 31 will rise upwardly byriding of cam pin 39 on cam surface 40. When impeller 23 is disposed outof contact with the water stream or nozzle 18 the weight of the impellerstructure including impeller 23 with arms 30 and 32 and bushing 31, willgravitatingly rotate impeller 23 clockwise toward the water stream. Thiswill bring the impeller 23 back into engagement with the water streamand the result will be a reciprocation back and forth of impeller 23 andat the same time the impact of hammer 33 will produce gradual rotationof the sprinkler head 10. This jerking movement of the sprinkler headwill have the effect of distributing the water stream from nozzle 18over a relatively wide area as the sprinkler head rotates. This isproduced by the partial cutting off of the stream from nozzle 13 and theforce of impact of hammer 33, which will produce a spreading or breakingof the two streams from nozzles 18 and 19.

What is claimed is:

A lawn sprinkler comprising a stationary member for connection to awater supply, a sprinkler head loosely and rotatably carried by saidmember, said head comprising a vertical tubular stem, a pair ofdivergent tubular arms extending from said stem, a nozzle on the outerend of each arm, a vertical shaft extending upwardly from the junctionof said arms, a lever pivotally carried by said shaft, an impeller bladecarried by said lever and disposed in a position to at least partlyintersect the stream of water from one of said nozzles, an impact membercarried by said lever cngageable with one of said nozzles to therebyprogressively rotate said head upon movement of said impeller relativeto said head, a cam fixed on said shaft having a cam surface inclined tothe vertical, and a cam engaging pin carried by said lever adapted uponrotation of said lever to raise said impeller out of contact with saidstream.

References Cited in the file of this patent UNITED STATES PATENTS KeysMar. 1, 1932 Englehart Apr. 16, 1935 Buckner May 30, 1939 Shoemaker Apr.15, 1952 FOREIGN PATENTS France Aug. 26, 1953

